If a week's worth of treatment and strengthening exercise go well, Tomlinson could test the groin before the game on Sunday. But he also said there's a chance he could be ruled out beforehand.

"We're leaving it as day-to-day and just see how it reacts," he said.

*Steelers quarterback Ben Roethlisberger, who battled the effects of a concussion last week, returned to practice and expects to play against the Chargers. ... Arizona wide receiver Anquan Boldin has a strained left hamstring and is uncertain for Saturday at Carolina.

Harrison wins AP award: James Harrison is the Associated Press 2008 Defensive Player of the Year.

The Steelers linebacker, who had a career-high 16 sacks to set a team record and led the NFL with a career-high seven forced fumbles, beat Dallas' DeMarcus Ware in balloting by a panel of 50 announced Monday.